Features
▌Aqua Angel is a series of earthquake-resistant and firefighting water tanks capable of safely storing water necessary for emergencies
- The robustness of the steel plate and corrosion resistance of the FRP are combined in a three-layer structure forming the inside and outside of the tank providing strength and total water-tightness.
- The use of steel plates with excellent resilience provides superior earthquake resistance and eliminates cracks.
- Seamless FRP coating on the inside and outside completely prevents electrolytic corrosion.
- The cylindrical shape provides resistance to both soil pressure and internal pressure.
- The lightweight materials make delivery and installation easy. This leads to shorter construction periods.
- During emergencies, the stored water can be used as drinking water by employing filters and purifiers.
▌ Unitary Horizontal Cylinder Type Water Storage Tank (40m³, 60m³, 80m³, 100m³)
Certified by Fire Equipment and Safety Center of Japan
Unitary Horizontal Cylinder Type Water Storage Tank for firefighting purpose ・Suitable for large places and passageways
・Can be installed quickly as finished product is delivered from the factory
・Transportation using by 10ton truck or low-floor drop deck trailer
・Floating prevention guideline according to underground water level or soil condition can be provided.
・Other capacity of water storage tank can be provided (not certified but equivalent to certified products)
▌ Divided Horizontal Cylinder Type Water Storage Tank (40m³, 60m³, 80m³, 100m³)
Certified by Fire Equipment and Safety Center of Japan
Unitary Horizontal Cylinder Type Water Storage Tank for firefighting purpose
・Suitable for large places and passageways
・Can be installed quickly as finished product is delivered from the factory
・Transportation using by 10ton truck or low-floor drop deck trailer
・Floating prevention guideline according to underground water level or soil condition can be provided.
・Other capacity of water storage tank can be provided (not certified but equivalent to certified products)
▌ Caisson Method Vertical Cylinder Type, Water Storage Tank (40m³, 60m³, 100m³)
Caisson Method Type/Vertical Cylindrical Cylinder Type, Water Storage Tank for firefighting purpose
・Suitable for narrow places and narrow passageways
・Due to light weight components, it can be transported by 2t trailer
・Can be installed by a compact crane
・Can also be installed on soft ground condition
▌ Unitary Horizontal Cylinder Type Water Storage Tank
▌Divided Horizontal Cylinder Type Water Storage Tank
▌ Caisson Method Vertical Cylinder Type, Water Storage Tank
Comparison
▌ Advantages of Aqua Angel
Economic Efficiency
・Reduction of construction cost (personnel cost, heavy machinery cost)
・Shortening of construction period
Safety
・FRP’s durability, corrosion and water resist performance would protect the environment almost permanently.
・Cylindrical shape that can withstand load and soil pressure
Maintenance
・it can be easily repaired and refurbished in the unlikely event of breakdown.
| Prefabricated Concrete Tank | Aqua Angle | |
| Installation time | 10-15 hours | 3-6 hours |
| Total construction days | 15-17 days | 8-10 days |
| Curing time in | 48-96 hours | 6-8 hours |
▌Comparison from shipping up to burial (Reference: 40m3 capacity)
Construction Process
▌Unitary Horizontal Cylinder Type Water Storage Tank
１．Installation preparations
● Construct flat foundation with concrete.(Foundation may be unnecessary depending on soil quality and groundwater level)
● Lay rubber sheet to prevent damage to tank.
２．Delivery
● Deliver unitary tank by 10-ton truck or low-bed trailer.
３．Installation
● Attach designated wire and hooks to lifting lugs on tank and suspend it.
● Crane capacity must be at least 20 tons.(Varies depending on work radius)
４．Back filling
● Use earth and sand suited to site or soil generated from excavation or otherwise and exercise caution with back filling.
● Add water while sufficiently compacting backfill.
● Do not drive heavy machinery directly over water tank when back filling.
▌Caisson Method Vertical Cylinder Type, Water Storage Tank
１．Installation preparations
● Construct flat foundation with concrete.(Foundation may be unnecessary depending on soil quality and groundwater level)
● Lay rubber sheet to prevent damage to tank
２．Delivery
● Deliver unitary tank by 10-ton truck or low-bed trailer.
３．Installation
● Attach designated wire and hooks to lifting lugs on tank and suspend it.
● Crane capacity must be at least 20 tons.(Varies depending on work radius)
４．Assembly and installation
● Weld parts together and make solid piece with FRP on inside and outside.
5．Back filling
● Use earth and sand suited to site or soil generated from excavation or otherwise and exercise caution with back filling.
● Add water while sufficiently compacting backfill.
● Do not drive heavy machinery directly over water tank when back filling.
▌Caisson Method Vertical Cylinder Type, Water Storage Tank
1. Excavation at installation location and delivery
● Excavate burial site with excavator.
● Perform base leveling on installation surface and make it flat.
● Deliver divided tank with small truck.
2. Suspension
● As with solid type, suspend tank from hangers.
● Crane capacity must be at least 7.5 tons.
3. Assembly
● Weld parts together and make solid piece with FRP on inside and outside.
4. Base/top plate installation
● After getting down to position, attach base/top plates.
Manufacturing Process
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| 01. Bending | 02. Interior welding | 03. Exterior welding |
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| 04. Nozzle mounting | 05. Hydrostatic inspection | 06. Abrasive treatment by shot blasting |
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| 07. Application of top coat on interior on exterior | 08.Spraying FRP on the outside | 09.Application of top coat |
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| 10.Film thickness measurement/ inspection | 11.Pin hole inspection | 12.Completion |
